Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Bujinkan Budo Taijutsu is a highly effective martial art, with roots in the mystical arts of the ninja from medieval Japan.
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Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Bujinkan Densho Ninja Scrolls: map the core Sports workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Limited content variety and depth
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Low user engagement due to lack of community features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor user ratings indicate usability issues
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: In-app purchases may not be well-explained
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Bujinkan Budo Taijutsu is a highly effective martial art, with roots in the mystical arts of the ninja from medieval Japan. The techniques ("kata") of the nine Bujinkan schools have survived centuries of war on the battleground and were composed into a modern martial art system by Dr. Masaaki Hatsumi. Bujinkan is a complete martial art system with hitting, blocking, throwing, landing, rolling, locks, strangling, controlling, dodging, pressure points, body movement, and so on. It also includes training for mastering all kinds of weapons, from the ninja swords, to the famous ninja stars ("shuriken"), but also knifes, sticks, spear, naginata, chain, and much more. For the first time all these techniques can now be found in one place: the Bujinkan Densho Ninja Scrolls app. This app includes : - the names of each kata - the descriptions as found in the densho scrolls (if made public) - training notes explaining some techniques in more detail This app contains all known techniques of the following schools taught in the Bujinkan martial arts system : - Togakure Ryu Ninpo Taijutsu - Gyokushin Ryu Ninpo - Kumogakure Ryu Ninpo - Koto Ryu Koppojutsu - Gyokko Ryu Kosshijutsu - Kukishinden Ryu Happo Bikenjutsu - Shinden Fudo Ryu Dakentaijutsu - Takagi Yoshin Ryu Jutaijutsu - Gikan Ryu Koppojutsu Starting in the Bujinkan can be an overwhelming experience due to the large scope of techniques and weapons taught. This app will help you understand the overall structure of the system. The app allows you to browse the kata grouped as in the scrolls and to quickly look up a specific technique for reference when training, or just out of curiosity. And remember, as Soke says: "don't be a kata collector, just keep on training !" Important "Don't try this at home" disclaimer : The techniques presented in this app are highly effective combat techniques and should not be practiced without a qualified teacher. Written documentation is only part of martial arts. In order to fully understand a technique and to apply it safely, oral transmission is necessary. Ignoring this you and others will get hurt. Furthermore, the use or the possession of any of the weapons or techniques described in this app may be prohibited by local or national law in your country. We will take no responsibility for the legality or appropriateness of any weapon or technique mentioned in this app. Contents disclaimer : The information presented in this app is based upon my personal training and research, with great help from public sources (mentioned where appropriate) and has not been verified by, nor received the approval of Hatsumi Soke. This is my personal interpretation of what I learned through the years of training and research in the wonderful world of Bujinkan. This app aims to give a clear description of all known techniques, but it will not go into every possible detail of the movements, intentions, feeling, oral transmission etc. as it is not meant to be a training manual nor an instruction book. To learn this you will need to train in a licensed dojo.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.